The story idea is a good one, it’s details are not. The books are written by someone who clearly doesn’t understand what they are writing about. How does a person get thin after missing 1-2 meals in a day. Where did all the people go? After just 2 days the houses are mainly empty with no clue where they went. The dad was a ranger but makes tactical mistakes constantly. The son often sounds like a middle schooler not someone about to start the 12th grade.
The narrator sounds like old AI with their emphasis being on the wrong sounds.